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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Khal Drogo# | 1.059 | 2030-2039 | |
| 2 | Anthony Johnston | 1.030 | 2020-2029 | |
| 3 | Martín Martínez | 1.023 | 2023-2029 | |
| 4 | Felipe Campos# | 1.022 | 2031-2039 | |
| 5 | Jack Weber | 1.019 | 2015-2023 | |
| 5 | Dave King | 1.019 | 2014-2026 | |
| 7 | Tomás Gonzáles | 1.018 | 2014-2019 | |
| 8 | Ramón Padilla# | 1.008 | 2035-2039 | |
| 9 | Noel Ballard* | 1.004 | 2015-2034 | |
| 10 | Chris Etheridge | .997 | 2026-2034 | |
| 11 | Hank Wilder | .995 | 2019-2032 | |
| 12 | Ed Anderson | .992 | 2016-2025 | |
| 13 | Kumanosuke Abe | .991 | 2022-2031 | |
| 14 | Carlos Maldonado | .990 | 2025-2032 | |
| 15 | Lúcio Montoya | .989 | 2017-2022 | |
| 16 | Danny Spencer | .984 | 2014-2017 | |
| 17 | José Corona# | .982 | 2028-2039 | |
| 18 | Wes Bradley | .980 | 2021-2027 | |
| 18 | Augusto Encarnación# | .980 | 2029-2039 |
